320 INDEX TO AMERICAN BOTANICAL LITERATURE 
Shufeldt, R. W. Sycamore or buttonwood tree flower. Am. Forest. 
23: 146. Mrig17._ [Illust.] 
Smith, E. F. Banana diseases in Cuba. Hawaiian Forest. & Agr. 
Month. Mag. 8: 33-35. Ja I9gII. 
Copied from the West Indian Committee Cire. July 5, 1910. 
Stakman, E. C., & Tolaas, A. G. Potato diseases. Minnesota Farm- 
ers’ Lib. 3: 1-15. f. 1-7.’ N Iga. 
Stevens, N.E. The influence of temperature on the growth of Endothia 
parasitica. Am. Jour. Bot. 4: 112-118. f. 7. 17 F 1917. 
Stober, J. P. A comparative study of winter and summer leaves of 
various herbs. Bot. Gaz. 63: 89-109. 15 F 1917. F 
Stone, G. E. Shade trees, characteristics. adaptation, diseases, and 
care. Massachusetts Agr. Exp. Sta. Bull. 170: 124-264. f. 1-109. 
S 1916. 
Sumner, F. B. The réle of isolation in the formation of a narrowly 
localized race of deer-mice (Peromyces). Am. Nat. 51: 173-185. 
Mr 1917. 
Tharp, B.C. Texas parasitic fungi. Mycologia 9: 105-124. 22 Mr 
1917. 
Includes new species in Ascochyta (1), Cercospora (26), Colletotrichum (1), Conio- 
thyrium (2), Exosporium (3), Napicladium (1), Phleospora (1), Phyllachora (1), 
Phyllosticta( 3), Ramularia (2), and Septoria (7). 
Vilaré, J. Funciones de relacion en los vegetales. Rev. Fac. Let. y- 
Cien. Habana 1: 261-270. N 1905. _ [Illust.] 
Vries, H. de. Oenothera Lamarckiana mut. velutina. Bot. Gaz. 63: 
1-24. pi. F. 45 Ja Tot7, 
Waller, A. E. A method for determining the percentage of self-pol- 
lination in maize. Jour. Am. Soc. Agron. 9: 35-37. 54 2OETs 22 
Watkins, S.L. The California fuchsia. Am. Bot. 23: 12,13. F 1917. 
Zauschneria californica. 
Wernham, H. F. Tropical American Rubiaceae—VII. Jour. Bot. 54: 
322-334. f. 14.  N tore. 
Wherry, E.T. Two new fossil plants from the Triassic of Pennsylvania. 
Proc. U.S. Nat. Mus. 51: 327-329. pl. 29-30. 24 N 1916. 
Palissya longifolia and Brunswickia dubia, spp. nov. 
White, J. Salvia sylvestris L. in county Peel, Ontario. Rhodora 19: 
39, 40. 14 F 1917. 
Wicks, M. Deserts due to deforestation. Am. Forestry 22: 598-606. 
O 1916.  [Illust.] 
